Battery Cell Deformation Detection Using UWB Channel Response
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Solution Overview
Problem
Existing battery management systems struggle to detect mechanical deformations in battery cells without integrating sensors, which reduces power density and increases costs.
Innovation Solution
The system employs ultra-wideband communication units to transmit and receive UWB signals, which are used to determine channel impulse responses. By comparing these responses to reference signals, the system can detect deformations in battery cells without the need for integrated sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensors are integrated into battery cells to detect mechanical deformations, then detection capability is improved, but power density decreases and costs increase
Solution Approach 1:
The patent replaces mechanical sensors with an electromagnetic wave-based detection system. UWB signals are transmitted through the battery cell, and changes in the channel impulse response caused by mechanical deformations are detected electronically, eliminating the need for physical sensors integrated into the battery cells.
Solution Approach 2:
The patent introduces UWB signals as an intermediary medium to detect battery cell deformations. Instead of directly measuring physical deformation with sensors, the system uses electromagnetic waves that interact with the battery cell structure, and the resulting channel impulse response changes provide indirect but accurate deformation information.
2Measurement precision
If sensors are integrated into battery cells to detect mechanical deformations, then detection capability is improved, but costs increase
Solution Approach 1:
The patent replaces expensive mechanical sensors with a software-based signal processing approach. The detection system uses standard UWB communication hardware and algorithms to analyze channel impulse responses, significantly reducing component costs and simplifying manufacturing.
Solution Approach 2:
The patent creates a virtual model of the battery cell's electromagnetic environment through channel impulse response measurements. This digital twin allows deformation detection without physical sensors, reducing material costs and simplifying the manufacturing process.
3Measurement precision
If channel impulse response analysis is used to detect deformations, then detection accuracy is improved, but system complexity increases
Solution Approach 1:
The patent replaces complex sensor integration and signal processing hardware with a software-based analysis of existing UWB communication signals. The channel impulse response is derived from standard communication protocols, and deformation detection is achieved through algorithmic analysis rather than additional hardware complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach allows for the early detection of mechanical deformations in battery cells, enhancing electrical efficiency and reducing the risk of failure, while maintaining high power density and minimizing costs.
Implementation Method 1
the second control module is configured to transmit a first ultra wideband radio signal, referred to as first UWB signal, from the second UWB unit to the first UWB unit
Implementation Method 2
the first control module is configured to determine a first channel impulse response, CIR, based on a component of the received first UWB signal
Data Source
AI summary
The present invention relates to a system and method for determining of a mechanical deformation of a battery based on an influence on an ultra wideband, UWB, signal 120, which is transmitted between two UWB units of the system, where one of the UWB units is part of a control module of the system, wherein the control module also comprising a control unit being configured to be connected to a battery cell 116 of the battery 118 for controlling and/or monitoring the battery cell 116.